[glennaro]

I suggest ending it with "huh?": Where are you going to, huh?

Sometimes it's more fitting to end the sentence with "@sshole": What are you up to, @sshole?!

[Flaming Conservative]

What are you up to, @sshole?!

---

That’s “Up to what are you?” Which, of course, sounds ridiculous! “Wutchadoin?”, is obviously the best choice .

[Fightin Whitey]

I suggest ending it with "huh?": Where are you going to, huh?

Sometimes it's more fitting to end the sentence with "@sshole": What are you up to, @sshole?!

Doesn't get any better than that lol.